EN 14121-2003 铝和铝合金.电工用铝薄板材、带材和板材

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【英文标准名称】:Aluminiumandaluminiumalloys-Aluminiumsheet,stripandplateforelectrotechnicalapplications;GermanversionEN14121:2003
【原文标准名称】:铝和铝合金.电工用铝薄板材、带材和板材
【标准号】:EN14121-2003
【标准状态】:现行
【国别】:
【发布日期】:2003-08
【实施或试行日期】:
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:铝薄板材;薄板材;层;断裂伸长;板;特性;电导性;电导性;硬度试验;铝锻造合金;顺序示度;厚度;腐蚀;铝带材;弹性极限应力;精整;弯曲试验;带材;布氏硬度;耐腐蚀性;铝;铝合金;电气工程;材料;抗拉强度;消费者与供货者的关系;机械性能;规范(验收);生产商试验;试验
【英文主题词】:Aluminium;Aluminiumalloys;Aluminiumsheets;Aluminiumstrips;Aluminiumwroughtalloys;Bendtesting;Brinellhardness;Conductivity;Consumer-supplierrelations;Corrosion;Corrosionresistance;Electricalconductivity;Electricalengineering;Elongationatfracture;Finishes;Hardnesstesting;Layers;Manufacturer'stest;Materials;Mechanicalproperties;Orderindications;Plates;Proofstress;Properties;Sheetmaterials;Sheets;Specification(approval);Strips;Tensilestrength;Testing;Thickness
【摘要】:
【中国标准分类号】:H61
【国际标准分类号】:77_150_10
【页数】:10P.;A4
【正文语种】:英语


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【英文标准名称】:TestMethodforDeterminationof2,4-TolueneDiisocyanate(2,4-Tdi)and2,6-TolueneDiisocyanate(2,6-Tdi)inWorkplaceAtmospheres(1-2ppMethod)
【原文标准名称】:车间空气中的2,4-甲苯二异氰酸盐(2,4-Tdi)和2,6-甲苯二异氰酸盐(2,6-Tdi)测定方法(1-2pp法)
【标准号】:ANSI/ASTMD5836-1995
【标准状态】:作废
【国别】:美国
【发布日期】:1995
【实施或试行日期】:
【发布单位】:美国国家标准学会(ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:操作台;甲苯;空气质量
【英文主题词】:Airquality;Diisocyanate;Operatingstations;Toluene;Workingplaces
【摘要】:
【中国标准分类号】:Z15
【国际标准分类号】:13_040_30
【页数】:
【正文语种】:英语


【英文标准名称】:StandardGuideforStatisticalAnalysisofAcceleratedServiceLifeData
【原文标准名称】:加速使用寿命数据统计分析的标准指南
【标准号】:ASTMG172-2003
【标准状态】:现行
【国别】:
【发布日期】:2003
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:G03.08
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:statistical;devloping;life;data;stress;measurement
【摘要】:Thenatureofacceleratedservicelifeestimationnormallyrequiresthatstresseshigherthanthoseexperiencedduringserviceconditionsareappliedtothematerialbeingevaluated.Fornon-constantusestress,suchasexperiencedbytimevaryingweatheroutdoors,itmayinfactbeusefultochooseanacceleratedstressfixedatalevelslightlylowerthan(say90%of)themaximumexperiencedoutdoors.Bycontrollingallvariablesotherthantheoneusedforacceleratingdegradation,onemaymodeltheexpectedeffectofthatvariableatnormal,orusageconditions.Iflaboratoryacceleratedtestdevicesareused,itisessentialtoprovideprecisecontrolofthevariablesusedinordertoobtainusefulinformationforservicelifeprediction.Itisassumedthatthesamefailuremechanismoperatingatthehigherstressisalsothelifedeterminingmechanismattheusagestress.Itmustbenotedthatthevalidityofthisassumptioniscrucialtothevalidityofthefinalestimate.Acceleratedservicelifetestdataoftenshowdifferentdistributionshapesthanmanyothertypesofdata.Thisisduetotheeffectsofmeasurementerror(typicallynormallydistributed),combinedwiththoseuniqueeffectswhichskewservicelifedatatowardsearlyfailuretime(infantmortalityfailures)orlatefailuretimes(agingorwear-outfailures).Applicationsoftheprinciplesinthisguidecanbehelpfulinallowinginvestigatorstointerpretsuchdata.Thechoiceanduseofaparticularaccelerationmodelandlifedistributionmodelshouldbebasedprimarilyonhowwellitfitsthedataandwhetheritleadstoreasonableprojectionswhenextrapolatingbeyondtherangeofdata.Furtherjustificationforselectingmodelsshouldbebasedontheoreticalconsiderations.Note28212;Acceleratedservicelifeorreliabilitydataanalysispackagesarebecomingmorereadilyavailableincommoncomputersoftwarepackages.Thismakesdatareductionandanalysesmoredirectlyaccessibletoagrowingnumberofinvestigators.Thisisnotnecessarilyagoodthingastheabilitytoperformthemathematicalcalculation,withoutthefundamentalunderstandingofthemechanicsmayproducesomeseriouserrors.SeeRef(1).31.1Thisguidebrieflypresentssomegenerallyacceptedmethodsofstatisticalanalysesthatareusefulintheinterpretationofacceleratedservicelifedata.Itisintendedtoproduceacommonterminologyaswellasdevelopingacommonmethodologyandquantitativeexpressionsrelatingtoservicelifeestimation.1.2ThisguidecoverstheapplicationoftheArrheniusequationtoservicelifedata.Itservesasageneralmodelfordeterminingratesatusageconditions,suchastemperature.Itservesasageneralguidefordeterminingservicelifedistributionatusagecondition.Italsocoversapplicationswheremorethanonevariableactsimultaneouslytoaffecttheservicelife.Forthepurposesofthisguide,theaccelerationmodelusedformultiplestressvariablesistheEyringModel.Thismodelwasderivedfromthefundamentallawsofthermodynamicsandhasbeenshowntobeusefulformodelingsometwovariableacceleratedservicelifedata.Itcanbeextendedtomorethantwovariables.1.3Onlythosestatisticalmethodsthathavefoundwideacceptanceinservicelifedataanalyseshavebeenconsideredinthisguide.1.4TheWeibulllifedistributionisemphasizedinthisguideandexamplecalculationsofsituationscommonlyencounteredinanalysisofservicelifedataarecoveredindetail.ItistheintentionofthisguidethatitbeusedinconjunctionwithGuideG166.1.5Theaccuracyofthemodelbecomesmorecriticalasthenumberofvariablesincreasesand/ortheextentofextrapolationfromtheacceleratedstres......
【中国标准分类号】:J04
【国际标准分类号】:03_120_30
【页数】:12P.;A4
【正文语种】: